Midday Movers: REGN, FOSL & More

Regeneron rallied sharply after the biotechnology firm said that Sanofi will boost its stake via stock purchases in the open market.

Fossil gained ahead of its quarterly earnings report expected Tuesday. Analysts expect the company to post earnings per share of $2.26 on revenue of $930 million. Benchmark Capital cut the fashion accessories company to "hold" from "buy" ahead of the report, citing lack of upside catalysts.

Genworth Financial rose following a report that said the firm is in talks to sell its wealth management and alternative investment business for $400 to $500 million. The analyst at Sandler O'Neill said an approximately $450 million price tag for the business would not be "unreasonable."

Diamond Foods popped on heavy volume, amid reports suggesting that a short squeeze might be a factor.

Krogerhit a 52-week high after an upgrade from Goldman Sachs to "neutral" from "sell".